Arch for furnaces.



GIRTANNBR. ARCH FOR FURNAUES.

APLGLTIDE FILED JUNE 8,1908.

I ate'n-ed Jan. 26, 1909.

2 SHEETS-SHEET 1.

F. GIRfINNER.

ARGE FOR FURNACES.

APPLICATION FILM JUNE 8,1908,

Snowdon ifa den'djf Quia/117er: f'

2 SHEETS-SHEET 2.

Pateute Jan.. 26, i969.

f UNITED sTATns PATENT aerien FREDERICK GIRTANNEILVOF ST. LOUIS, MISSOURI, ASSIGNOR TO LACLEDE CHRISTY CLAY f PRODUCTS CO., OF ST. LOUIS-MISSOURI.

'ARCH non summons.

lSpecification of Letters Patent.

Patented aan. 26,1909.

Appelation ned June s, 190s. serial No. 437,381.'

Aand State of Missouri, have invented certain new and useful Improvements in Archesfor Furnaces, of which the following is a specification.

This invention aims to provide a at arch or crown for the 'combustion chambers of steam boiler and like furnaces, the construction Ibein such as to admit of any element being' rea il replaced and of a iiat arch be-- ing success ully employed, it having been found advantageous to embody a flat arch or crown in furnace construction over the ordinary curvedy arch, which latter, besides eX- erting an outward pressure upon the furnace walls, provides an unequal space between its lower side and the fire.

In accordance with this invention, a metal support or beam is employed and is supplied wit brackets, the latter bein of peculiar formation, and tiles are suspent ed from said brackets and are adapted to interlock at their opposing sides, the construction resulting'in a flat arch and enabling anyone ofthe tiles to be removed or replaced. i

For a full understanding of the invention and the merits thereof and also to acquire a knowledge of the details of'construction and the meansfor effecting the result, reference is to be had to the following description and accom an ing drawings.

W'hie t e invention may .be adapted to different forms and conditions by changes in the 'structure an"dl minorl details without departin from the spirit or essential features thereo still the preferred embodiment is shown in the accompanying drawings, in which: i

Figure 1 is a top plan view of an arch embodying the invention. Fig.- 2 is 'a'sectional view of the arch on the line :r--x of Fig. 1,

. showing the furnace walls in connection therewith. Fig. 8 is an end view ofthe arch havincr the wall supporting brackets remove and the supporting beam in section. Figs. 4 to 9, inclusive, are detail views of the several tiles used in the arch.

Corresponding and like arts are referred to in the followinO` description and indicated in all the views o -the drawings by the Same reference characters.

The main support of the arch consists of a beam 1 which may be of any suitable con-l struction and cross sectional outline, and, as shown, is of I form, the same being best adapted for the purpose. A pair of brackets 2 are provided at each end of the beam 1 and 'are bolted or otherwise secured. to opposite sides thereof, said brackets serving to secure the beam in the walls 3 of the furnace. The wall brackets 2 are flanged so as to obtain. a broad bearing against the sides of the beamv 1 and u onthe walls of thefurnace, thereby secure y holding the beam in the adjusted or desired osition against possible misplacement. gther brackets 4 are attached to opposit'e sides of the beam 1 and have endent 'portions 5 which project belowl t e said beam and formedv upon opnosite sides with outer ribs or iianges 6, the atter serving to strengthen the brackets and to form supporting means for the tiles. The ends or' the brackets 4 adjacent to the sides of the beam are flanged and are apertured to receive the fastenings by means of which said brackets to receive a supporting flange 6 at the lower edge of the pen ent portion 5 of the brackets. The grooves 8 are deeper than the thickness of the flanges 6 so as to leave a space 9 below the lower edges of the brackets for the circulation of air and thereby prevent overheating or burning of said brackets. The tiles forming the arch are spaced a =short distance from the lower edge of the beam 1, as indicated at 10,y said space providing for a circulation of air to prevent burning ofthe beam. The grooves 1l match the tongues 12 so that when thc several tiles are in position,l interlocking joints are rovided between the meeting sides there-ot, as indicated most clearly in Figs. 2 and 3. The end tiles are formed with extensions 13 which project up along the outer ends of the brackets 4 and protect the same from the direct action of the fire.

The beam 1 having the several brackets attached is supported in the side walls 3 of a sions i3, must'be slipped into furnace, the brackets 2 *protect the same.

being built into said walls and forming a substantial support Jfor the said beam. rlhe tiles 7 are placed in po sition by slipping them into the space formed between the endent. ortions oi adjacent brackets 4, t e tiles interlocking at their ends and ,sides as they are slip ed into place. The end tiles, because of t e eXtenlace from oposite sidesof the arch and tl e tiles are of such length that when in place the extensions 13 oi the end tiles will practically touch the outer ends oi the brackets and thereby he tiles range around the inner or rear edge 'of the arch and have pendent portions 14 which project below the lower surface of the arch and serve as retarders and deflectors to prevent the escape oi smoke and insure a more thorough combustion thereof. By retarding the unconsumed smoke and gases they are subjected Jfor a greater length ofl time to the action of the heat both from the bed'of fuel and 'from the arch. Then the smoke and gases reach the pendent portion 14 they are deiiected downwardly and come in contact with the lire and are consumed.

rhis construction enables soit coal to be burned 1n an ordinary furnace. i

The portions of the several tiles bordering upon the joint are spaced a art below the in' terloe'king parts, sion Without producing injury which would result if the parts came close together.

Having thus described the invention, what is claimed as new is;

thereby al owing for expan- In combination, an I beam, wall brackets secured to opposite sides oi the end portions of said beams, other brackets secured to opposite sides of the beam and having pendent portions provided along their lower edges with lateral extensions, and tiles having interlocking tongues and 'grooves in their meeting faces and provided with other grooves to receive the lateral extensions of the endent portions of the aforesaid brackets or suporting said tiles, the latter being s aced trom the lower portion of the am an having s aces below the pendent portions of the brac rets, said spaces providing for a circulation of air to prevent overheating or burning oi the supporting parts.

In testimony whereof I affix my signature in presence oi two witnesses. FREDERICK' erRrANNsR. [1.. s] Witnesses: f

C. E. Rornonx, G. A. WELLS. 

